Concentrating-machine



NoModeL v F. E. MONTEVERDE.

GONGENTRATING MACHINE;

No. 373,026. Patented Nov. 8, 1887.

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N. PETERS, Phnln-Llllwgraphur. Wnfllington, u. c.

NITE STATES FLORENOIO n. MONTEVEBDE, or SAN FRANCISCO, ASSIGNOB TO LOUISE o.

' BBAYTON, or OAKLAND, CALIFORNIA.

CONCENTRATING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 373,026, dated November 8, 1887.

Application filed September 29, 1886. Serial No. 214,873.

To all whom it may concern:

Be it known that I, FLoRnNcIo E. Mourn- VERDE, a citizen of the United States, residing in San Francisco, county of San Francisco, State of California, have invented certain new and useful Improvements in Concentrating- Machines, of which the following is a specification.

My invention relates to improvements in concentrating-machines in which a circular pan is rotated at the same time that it receives a reciprocal or shaking motion and operated by gears. It more particularly relates to that especial concentrating-machine described and shown in Letters Patent granted to Joseph S. Duncan, dated the 28th day of February, 1882, No. 254,123.

This machine, as fully described in this patent and constructed according to the same, has up to this time givenvery poor results, owing to its various parts rapidly wearing out, thereby producing a secondary oscillatory motion, and to a great degree counteracting and impeding the true concentrating of the ores treated in the machine.

My invention consists of devices for 00111- pensating the wear of these various parts and preventing the unnecessary movements of the machine, as will be hereinafter more fully described, and then pointed out in the claim.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of the machine with my improvements attached. Fig. 2is a part plan of the gearing of same. Fig. 3 is a detailed plan, in part section, of the driving-bracket of the same.

Referring to the accompanying drawings, A is the pan of the machine; B, the driving bevel-gear; O, the bevel-pinion transmitting power to the same through shaft and pulley; D, the outer spur-gear around which runs the pinion E. This latter through its vertical shaftF and fly'wheel G, with crank-pin H upon the same, transmits, by means of a connectingrod connecting with the, pin E upon the bottom of the concentratingpan, the necessary reciprocating or jerking motion to the same, which is fully described in the patent before quoted.

(No model.)

Secured by proper bolts to the top part of the outside annular spur-gear, D, are three or more plates, a, which project inward and rest immediately over and upon the smooth and level rim b of the top part of the bevel-gear B, and are fastenedto the annular spur-wheel D by suitable bolts. Under these clamps, and before securing same in place, I place one or several thin strips of light metal or paper, which, as the rubbing-surfaces wear, can be taken out, in this way bringing the faces together again and preventing any undue lost motion,and consequently any oscillating movement of the moving parts of the mach1ne, and keeping the same continually moving in a tree plane-a most necessary point to obtain satisfactory results.

Partly from causes already mentioned and from the natural wearing of moving parts the bearing-bracket A, which is bolted to the upper part of the arms of the bevel driving-gear B, and which carries the shaft of the revolving pinion E around the periphery of the annular spur-Wheel D, was found to wear out, and thereby cause trouble in its adjustment and expense in relining the same. Now, to obviate this and to facilitate the taking up of any undue wear, I have made the cap 13 of the bracket A box like in shape, and within it I place a false piece or gib, 0, made of any sultable metal, iron being preferred from its cheapness. This gib is lined with Babbitt or any other anti-friction metal upon its inner surface where it bears upon the revolving shaft F. Back of this gib and within the cap I place a thin strip of metal, d, upon which rest the points of two or three adj usting'screws, e, passing through the cap B, and provided on the outside with check-nuts to keep them in place once the adjustment and alignment of the gib is made. It will be seen that by these 0 means any wear of the babbitted surface of the bearing of this shaft can be taken up by screwing in the adjusting-screws against the plate (1, thus pushing the gib G into perfect contact with the Vertical shaft F throughout its full surface, and by, this means maintaining the same in a true vertical position. Any irregular wear that may take place at either end of the bearing can be adjusted by merely turning The combination, in an ore concentrator the corresponding screw to a more or less tie with an outer annular spur'gear, D, and the gree. Thus itwill be seen that by these means inner beveled gear, B, of the removable strips,

I obtain at all timesaperfect bearing upon the the plates 11, and the clamping-bolts, as and r5 5 revolving shaft, whichtransmits the reciprocal for the purpose set forth.

motion to the machine, at the same time maintaining' the samein perfect alignment through FLORENOIO E. MONTEVERDE. the lack of any unnecessary movements caused by an undue wear of its working parts. \Vitnesses:

IO Having thus described myinvention, I claim WV. 13. PARKS,

and desire to secure by Letters Patent- F. XVAINER. 

